<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>用户操作书籍页面</title>
</head>
<style>
    #title {
        width: 300px;
        height: 40px;
        background-color: cadetblue;
        font-size: 20px;
        margin-left: 20%;
    }
</style>
<body>
    <div id="title">
        <h2 style="padding-left: 32%">用户操作</h2>
    </div>
</body>
</html>